Sorry bro, you've got so many grows going on...Can't keep up which is which sometimes...Was convinced you had this one in an autopot as well...Well, were on a canna forum as well so
My advice still stands --> pH issue causing lockout. Let her dry out a bit, maybe even place the pot on a seedling mat to hasten the drying process and then water with plain, dechlorinated water with 1gr/L of Bactrex added to it. You can also add 2ml of Orgatrex to that if you didn't give that in the last week or so. The carbs will feed the Mycelium inside the soil along with the bacterial colonies you are adding with the Bactrex.
Don't give to much water to the soil. You know the trick with squeezing a handful of soil in your hand right? It's better to add 2gr of Bactrex (and double up on the Orgatrex as well) to the water if you have the feeling you're not going to have to add much, but still want enough of the Bactrex inside...get my drift? But first let her dry out for a couple of days, this will stop the nitrification going on right now. Then the Bactrex, which will help in getting that soil back into balance.
Good luck bro